Case presentation A 17-year-old boy presented to the emergency department complaining of restricted lower limb movement for six hours, followed by a fall from a standing height. There was a sudden onset of severe pain, which aggravated on moving the lower limb. Past medical history No medical or family history and instances of accidental injury or trauma were found. Clinical findings Physical examination No palpable head, neck, or supraclavicular lymph nodes were found.

The erythrocyte sedimentation rate was 32 mm/hr (higher than normal 0-20 mm/hr) Radiographic examination Spiral fracture in the left femoral shaft MRI and CT scan study Multiple scattered sclerotic lesions over the bilateral proximal femur, left distal femur, proximal tibia, and distal tibia and fibula. What would be your diagnosis for this boy? Melorheostosis Osteopoikilosis Osteonecrosis Porotic hyperostosis (Answer is…